Schlomann, Anna
von Storch, Katja
Rasche, Peter
Rietz, Christian
Article History
Received: 14 March 2016
Accepted: 11 April 2016
First Online: 13 June 2016
Compliance with ethical guidelines
:
: A. Schlomann, K. von Storch, P. Rasche and C. Rietz state that there are no conflicts of interest.
: The usability-study has obtained approval from the responsible ethics committee (medical faculty, university hospital Aachen, EK038/15, February 2015). Prior to their participation in the group discussion a written informed consent was signed by all subjects. Data is presented in a form which does not allow for personal identification.